Burner.



A. J. JOHNSON.

BURNER. APPLICATION mp0 JULY 11. 1912.

1,231,369. PatentedJuneZB, 1917.

res PATENT OFFICE.

' ANDREW 3'. JOHNSQN', 015 CLEVELAND, OHIO.

BURNER.

. i i. Application filed J'u1y1 7,1912. Serial No. 709,914.

- To all whom it may concern:

Be it known that I, ANDREW J. JQIiDiSON, a citizen of the United States, reslding at Cleveland, in thecounty of Cuyahoga and 1 State of Ohio, have invented certain new and useful Improvements in Burners, of

which the following is a specification.

This invention relates to improvements in heating devices for printing presses and re lates particularly to certa-inmechanism for confining the open flame and the heat there- T from directly to the underside of the printed sheet and to certain other details relating to the delivery of the sheet to the burner and in the adjustment of'the guards used in conjunction with the burner.

The invention maybe further briefly sumjmarized as consisting in the combination and of the burner mechanism; Fig. 8 is a longi- ,tudinalsection through thefmixer; Fig. 4

is a transverse section on the line 45- of Fig. 2; Fig. 5 is section upon the line) I 5,-5 of Fig. 2 and Figs. 6 and 7 are detail views. In carrying out the invention any pre-' ferred form and construction of parts may T be employed 'so long as they possess the necemary characteristics, but I have shown the invention applied to the delivery mecha nism of a press, wherein 1 represents one of the wheels which carries the usual tape 2. This delivery mechanism comprises a plurality of narrow belts which convey the printed sheet from the press onto a suitable receiving board or table and the device covered by this application is applied as near as practical to the end of these belts and is adjacent to their supporting rollers 1. I Secured to a bar iii which formsa part of the press, or in any other suitable manner, is a split collar 4 having secured thereto by means of a bolt 5am ear 6 forming a part of a sleeve support 7. There is one of these complete devices at each side of the machine and they carry a main burner tube 8 rigidly held in these sleeves by suitableset screws 9. This burner tube 8 is closed at one end and is provided throughout its length-with a plurality of gas orifices .10

Specification of Letters fatent. Patented June 26, 1917.

arranged in a line longitudinally ofthe tube.

The; tube may be adjusted and held by the" set screws 9 in a position so that they are near the top of the burner tube, as shown in Fig. 5. One endof this tube isprovided with a suitable opening 11 for receiving air to form a mixture, and telescoping about this tube is. a split sleeve 12 which "fits the tube snugly and serves asa means for, adjusting the volume of air admitted. Fit

ting in the endof the tube is a gas connec-' tion 13 provided with a gas nozzle 14 arranged to project a stream of gas into the burner tube 8. This gas connection is held in place by a pressure created by a set screw adjacent this end of the burner.

The operation of the burner itself is similar in all respects to that which takes place in ordinary burners, and the invention re= 7 sides in certain guards and attachments in connection with this burner, as will be brought out. I i

Secured to. the burner, preferably toward the underside and away from the feeding belts, are suitable brackets 15 each provided withja slot 16 for receiving a screw 17 thr'eadedinto the burner tube and adapted to clampdown against a washer 18 to hold the brackets inplace, the'slot serving to .permit adjustment of these brackets around the tube. Each bracketis provided with an outwardly extending plate portion 19 haviiig a slot 20 for receivln @ascrew 21 which passes through a con ing guard plate 2:2 into a suitable nut '23 on the bottom of the plate portion 19. This confining plate is adjusted so that it extends out in a direction such that it will touch the underside of the printed sheet as it passes from the press, and for a purpose to be later described.

openings-24 at'various points throughout its length to permit of expansion of the por-. tions between these cuts as the plate becomes heated from=the flame.

' Secured to the upper part of the burner tube and extending throughout its length is a guard plate 25 which extends out over the burner orifices but does not extend far enough to prevent the flames themselves from *engaging the underside ofthe printed sheet. This guard is held in place by means of a strip '26 secured to the burner tube by means of screws 27 passing through openings in the strip 26 and the guard plate 25 and tbreaded'mto the burner tube. This The plate is preferably cut with V-shaped BEST AVAILABLE COPY strip 26 also serves "to hold the shanks 28 of suitable guides 29 in placefThese guides 29 extend to the rear and toward the feeding belts to bridge the gap and prevent the paper from passing down between the burner and the feeding mechanism.

In ord'erto adjust the effective length of the burnerit may be provided with guides 30 secured to the burner tube 8 on either side of the burner orifices and sen-ing to guide a plate 31 arranged to slide over the orifices and close more or less of themas desired. i In use, the operator adjusts the amount of gas in the mixer so'that he obtains a blue flame tllTOliglKmb the length of the burner and further so that the flames extend beyond the cdge'of the guard plate and also adjusts the outer, c p it will toiilihi the undersideoit' the printed sheet. During the operation of the press the paper passes over the burner and the flames together with the heat confined in the space between the confining plate and the guard plate causes the sheet to be heated and the inlrto be dried sufiiciently to prevent offsetting."

Having described my invention, I claim l. Burner mechanism for printing presses comprising a burner supported at a point near the path of the paper in its delivery from the press. and means for confining the heat from the flame of the under side of the sheet. Y Y

2. Burner mechanism, for printing presses comprising a burner supported at a oint near the path of the paper in its delivery from the press, and a device carried by the burner and 'xtending to a point coincident with the ath 'of the paper for confining the heat of t e flame'of the burner against the under side of the sheet. V

3. Burnermechanism for printing comprising a burner supported at near the path-of the paper in its presses a point delivery go '01 the confining plate, so that p the burner against from the press, and a confining plate carried by the burner and extending to a point coincident with the path of the paper.

4. Burner mechanism for printing presses comprising a burner supported at a point near the path of the from the press, burner, and a confining plate supported on the brackets and extending to a point coincident with the path of the paper in its delivery from the press and adapted to confine the heat from the fiam'e of the burner against the under side of the sheet.

5. Burner mechanism for printing presses comprising a burner supported at a point near the path of the paprr in its delivery from the press, hracketsharricd by the burner, and a confining plate supported on the brackets extending to a pointcoincident with the path of the paper and provided with cut off portions to sion of the confining plate.

6. Burner mechanism for printing presses comprising 'a burner supported at a point near the path of the paper in its delivery from the press, brackets carried by said burner, a confining plate supported upon said brackets extending from the burner to a point coincident with the path. of the paper in its delivery and a guard plate extending from the top of the burner over a portion of the flame.

'7. Burner mechanism for printing presses comprising a burner, a strip secured to said burner and extending the length thereof, and removable guides, having portionsengaging under said strip, said' guides being adapted to project into the-burner and the delivery mechanism.

In testimony whereof I afiix my signature in presence of two Witnesses as follows.

ANDREW J. JOHNSON.

Witnesses:

G. O. FARQUHARSON, "C. H. TanscH.

permit. the expanthe space between v paper in its delivery brackets carried by the 

